A336937 - cp's OEIS frontend

A336937 The 2-adic valuation of sigma(n), the sum of divisors of n.

n	a(n)
1	0
2	0
3	2
4	0
5	1
6	2
7	3
8	0
9	0
10	1
11	2
12	2
13	1
14	3
15	3
16	0
17	1
18	0
19	2
20	1
21	5
22	2
23	3
24	2
25	0
26	1
27	3
28	3
29	1
30	3
31	5
32	0
33	4
34	1
35	4
36	0
37	1
38	2
39	3
40	1
41	1
42	5
43	2
44	2
45	1
46	3
47	4
48	2
49	0
50	0
51	3
52	1
53	1
54	3
55	3
56	3
57	4
58	1
59	2
60	3
61	1
62	5
63	3
64	0
65	2
66	4
67	2
68	1
69	5
70	4
71	3
72	0
73	1
74	1
75	2
76	2
77	5
78	3
79	4
80	1
81	0
82	1
83	2
84	5
85	2
86	2
87	3
88	2
89	1
90	1
91	4
92	3
93	7
94	4
95	3
96	2
97	1
98	0
99	2
100	0
101	1
102	3
103	3
104	1
105	6

[0, 0, 2, 0, 1, 2, 3, 0, 0, 1, 2, 2, 1, 3, 3, 0, 1, 0, 2, 1, 5, 2, 3, 2, 0, 1, 3, 3, 1, 3, 5, 0, 4, 1, 4, 0, 1, 2, 3, 1, 1, 5, 2, 2, 1, 3, 4, 2, 0, 0, 3, 1, 1, 3, 3, 3, 4, 1, 2, 3, 1, 5, 3, 0, 2, 4, 2, 1, 5, 4, 3, 0, 1, 1, 2, 2, 5, 3, 4, 1, 0, 1, 2, 5, 2, 2, 3, 2, 1, 1, 4, 3, 7, 4, 3, 2, 1, 0, 2, 0, 1, 3, 3, 1, 6]

cp's OEIS Frontend

A336937 The 2-adic valuation of sigma(n), the sum of divisors of n.

Table of values

List of values

n	a(n)
1	0
2	0
3	2
4	0
5	1
6	2
7	3
8	0
9	0
10	1
11	2
12	2
13	1
14	3
15	3
16	0
17	1
18	0
19	2
20	1
21	5
22	2
23	3
24	2
25	0
26	1
27	3
28	3
29	1
30	3
31	5
32	0
33	4
34	1
35	4
36	0
37	1
38	2
39	3
40	1
41	1
42	5
43	2
44	2
45	1
46	3
47	4
48	2
49	0
50	0
51	3
52	1
53	1
54	3
55	3
56	3
57	4
58	1
59	2
60	3
61	1
62	5
63	3
64	0
65	2
66	4
67	2
68	1
69	5
70	4
71	3
72	0
73	1
74	1
75	2
76	2
77	5
78	3
79	4
80	1
81	0
82	1
83	2
84	5
85	2
86	2
87	3
88	2
89	1
90	1
91	4
92	3
93	7
94	4
95	3
96	2
97	1
98	0
99	2
100	0
101	1
102	3
103	3
104	1
105	6

n	a(n)
1	0
2	0
3	2
4	0
5	1
6	2
7	3
8	0
9	0
10	1
11	2
12	2
13	1
14	3
15	3
16	0
17	1
18	0
19	2
20	1
21	5
22	2
23	3
24	2
25	0
26	1
27	3
28	3
29	1
30	3
31	5
32	0
33	4
34	1
35	4
36	0
37	1
38	2
39	3
40	1
41	1
42	5
43	2
44	2
45	1
46	3
47	4
48	2
49	0
50	0
51	3
52	1
53	1
54	3
55	3
56	3
57	4
58	1
59	2
60	3
61	1
62	5
63	3
64	0
65	2
66	4
67	2
68	1
69	5
70	4
71	3
72	0
73	1
74	1
75	2
76	2
77	5
78	3
79	4
80	1
81	0
82	1
83	2
84	5
85	2
86	2
87	3
88	2
89	1
90	1
91	4
92	3
93	7
94	4
95	3
96	2
97	1
98	0
99	2
100	0
101	1
102	3
103	3
104	1
105	6

n	a(n)
1	0
2	0
3	2
4	0
5	1
6	2
7	3
8	0
9	0
10	1
11	2
12	2
13	1
14	3
15	3
16	0
17	1
18	0
19	2
20	1
21	5
22	2
23	3
24	2
25	0
26	1
27	3
28	3
29	1
30	3
31	5
32	0
33	4
34	1
35	4
36	0
37	1
38	2
39	3
40	1
41	1
42	5
43	2
44	2
45	1
46	3
47	4
48	2
49	0
50	0
51	3
52	1
53	1
54	3
55	3
56	3
57	4
58	1
59	2
60	3
61	1
62	5
63	3
64	0
65	2
66	4
67	2
68	1
69	5
70	4
71	3
72	0
73	1
74	1
75	2
76	2
77	5
78	3
79	4
80	1
81	0
82	1
83	2
84	5
85	2
86	2
87	3
88	2
89	1
90	1
91	4
92	3
93	7
94	4
95	3
96	2
97	1
98	0
99	2
100	0
101	1
102	3
103	3
104	1
105	6